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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /arch/sh/kernel/idle.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | arch/sh/kernel/idle.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/arch/sh/kernel/idle.c b/arch/sh/kernel/idle.c new file mode 100644 index 000000000..a80b2a5b2 --- /dev/null +++ b/arch/sh/kernel/idle.c @@ -0,0 +1,58 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * The idle loop for all SuperH platforms. + * + * Copyright (C) 2002 - 2009 Paul Mundt + */ +#include <linux/module.h> +#include <linux/init.h> +#include <linux/mm.h> +#include <linux/pm.h> +#include <linux/tick.h> +#include <linux/preempt.h> +#include <linux/thread_info.h> +#include <linux/irqflags.h> +#include <linux/smp.h> +#include <linux/atomic.h> +#include <asm/processor.h> +#include <asm/smp.h> +#include <asm/bl_bit.h> + +static void (*sh_idle)(void); + +void default_idle(void) +{ + set_bl_bit(); + raw_local_irq_enable(); + /* Isn't this racy ? */ + cpu_sleep(); + clear_bl_bit(); +} + +void arch_cpu_idle_dead(void) +{ + play_dead(); +} + +void arch_cpu_idle(void) +{ + sh_idle(); +} + +void __init select_idle_routine(void) +{ + /* + * If a platform has set its own idle routine, leave it alone. + */ + if (!sh_idle) + sh_idle = default_idle; +} + +void stop_this_cpu(void *unused) +{ + local_irq_disable(); + set_cpu_online(smp_processor_id(), false); + + for (;;) + cpu_sleep(); +} |